IMX7DCEC datasheet(82/161 Pages) NXP

82 / 161 page

Electrical characteristics

i.MX 7Dual Family of Applications Processors Datasheet, Rev. 7, 09/2023

NXP Semiconductors

4.10.1.1 ECSPI Master mode timing

Figure 44 depicts the timing of ECSPI in master mode. Table 59 lists the ECSPI master mode timing

characteristics.

Figure 44. ECSPI Master mode timing diagram

Table 59. ECSPI Master mode timing parameters

Parameter

Symbol

Min

Max Unit

CS1 ECSPIx_SCLK Cycle Time–Read

ECSPIx_SCLK Cycle Time–Write

tclk

—

CS2 ECSPIx_SCLK High or Low Time–Read

ECSPIx_SCLK High or Low Time–Write

tSW

21.5

—

CS3 ECSPIx_SCLK Rise or Fall1

1 See specific I/O AC parameters Section 4.6, “I/O AC parameters.”

tRISE/FALL

—

CS4 ECSPIx_SS_B pulse width

tCSLH

Half ECSPIx_SCLK period

—

CS5 ECSPIx_SS_B Lead Time (CS setup time)

tSCS

Half ECSPIx_SCLK period - 4

—

CS6 ECSPIx_SS_B Lag Time (CS hold time)

tHCS

Half ECSPIx_SCLK period - 2

—

CS7 ECSPIx_MOSI Propagation Delay (CLOAD = 20 pF)

tPDmosi

-1

CS8 ECSPIx_MISO Setup Time

tSmiso

—

CS9 ECSPIx_MISO Hold Time

tHmiso

—

CS10 RDY to ECSPIx_SS_B Time2

2 SPI_RDY is sampled internally by ipg_clk and is asynchronous to all other CSPI signals.

tSDRY

—

CS7

CS2

CS4

CS6

CS5

CS8

CS9

ECSPIx_SCLK

ECSPIx_SS_B

ECSPIx_MOSI

ECSPIx_MISO

ECSPIx_RDY_B

CS10

CS3

CS1

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